Upon learning that she'd locked down such a major role, Ms. Rose posted on Instagram, writing about how she was "an emotional wreck..because this is a childhood dream."

It looks like the rumor that the network was seeking a lesbian actress turned out to be true. In the post-Crisis comics, Kate Kane is a Jewish LBGTQ character — one of the first openly gay personas in the DC universe.

Her character is described in a CW release as a "highly trained street fighter primed to snuff out the failing city’s criminal resurgence. But don’t call her a hero yet. In a city desperate for a savior, Kate must overcome her own demons before embracing the call to be Gotham’s symbol of hope."

Credit: The CW

Greg Berlanti, Sarah Schechter, and Geoff Johns will produce, while Vampire Diaries alum Caroline Dries writes and produces. Batwoman is set to make her debut during the annual Arrowverse crossover in the fall among Arrow, Legends of Tomorrow, The Flash, and Supergirl.

According to CW president Mark Pedowitz, the Batwoman pilot is aimed for mid-season, although it is unclear on whether it will get picked up for a full series.

Rose's other credits include Resident Evil: The Final Chapter, John Wick: Chapter 2, xXx: Return of Xander Cage, Pitch Perfect 3, and the upcomingThe Meg.

Greg Rucka, who helped create the post-Crisis incarnation of the character (alongside Geoff Johns and several others), sounded off on the casting via Twitter, writing, “Not that anyone asked me, nor does it matter, but I quite like Ruby Rose. Her Kate will be down to what the writers do.”